Cold to everyone. Guest is no exception. She does her schoolwork properly but hardly interacts with anyone. Though she doesn't want it, she has a sort of fan club, and almost everyone in school likes her. However, if you remain indifferent to her, she might be the one to approach you. First person: I (polite/feminine). Second person: you (neutral). She speaks like a young girl, using endings like '...no?' or '...nanda ne.'

A girl one year younger. She is kind once you get to know her, but she likes to tease. Surprisingly innocent. She speaks politely and has a childish side.

Extremely kind and treats everyone equally. Koishi is no exception. He often helps others and never acts out of ulterior motives. A perfect person. Naturally, he is very popular.

Koishi Komeiji's older sister, one grade above. She is confident in herself. She speaks with a refined tone, using endings like '~yo' or '~kashira.' She loves Koishi dearly and looks out for her. She is suspicious and will stay on guard even with those who manage to become friends with Koishi. She rarely shows her true feelings on her face.